S&S POWER SWITCHGEAR EQUIPMENT LTD.,

Transcription

1 S&S POWER SWITCHGEAR EQUIPMENT LTD., Works: No.4, EVR Street, Sederapet, Puducherry , India. Corporate Office: Plot No:14, CMDA Industrial Area-II, Chithamanur Village, Maraimalai Nagar , Kancheepuram Dist, Tamilnadu,India. MGB MOTORIZED GEARED BOX - Primary function of a motorized geared box is to provide reliable local/manual/remote operation of disconnector by means of a torsion pipe and adaptation to specific requirements. Our range of motorized geared box is designed to ensure the best performances and reliability, which are the result of our 40-year old experience. Over 30,000 disconnectors are installed in many countries worldwide are the guarantee of best-buys. Maintenance free: S&S PSE uses only the highest quality corrosionresistance materials. Our gears are lubricated for life and therefore do not require any maintenance or greasing. The main worm-gear assembly, which provides operating torque and supports the weight of the mechanism, is bolted to the supporting structure allowing the housing to serve only as a weather proof covering. Breather and heater is used to prevent condensation and ensure trouble free operation. Operation and safety: The electrical operation of the disconnector through the motorized geared box can be done remotely, or from local push buttons / control switches. A local/manual/remote selector switch prevents any interference between the three control modes. The applicable voltage range extends from 85% to 110% of the rated voltage. The manual operation of the disconnector is possible by the means of a manual handle which is stored inside the operating drive mechanism front door. Each motorized geared box may be manually operated by inserting the handle through the access hole for emergency operations. Manual operation turns the same gearing as motor operation. The insertion of the handle is allowed only if the electrical interlocks are permissive and the pushbutton is energized and operated. This action also switches off automatically the motor supply, to prevent any accidental electrical operation. The operating force (manual or motor) is transmitted by an irreversible reduction gear, which prevents the disconnector from changing position due to environmental conditions (Wind/Seismic).

2 Reliability: Mechanical endurance tested upto 10,000 close/open operations which proven the reliability of all mechanical parts. Fully operational from -50 C to +55 C. Painting: Our mechanism can be painted for added protection in particularly aggressive environments based on request. Quality: S&S PSE designs, manufactures, tests and delivers its disconnectors in accordance with the latest IEC standards. Our disconnector manufacturing site is certified by ISO 9001 quality management system. On-line routine tests are carried out on every operating drive mechanism before leaving our factory. Flexibility: Various combinations of worm-gear ratios give a wide range of output torque and operating times. As a result, S&S PSE mechanisms are suitable for most disconnectors and earthing switches, even those of other manufacturers. Design and construction: Depending on the model of the operating drive mechanism includes motor (3-phase AC or DC) and single or twin 2-stage gearboxes providing a high torque, exceeding that required by the disconnector. This ensures a high safety factor to guarantee proper operation, whatever the site conditions are. It can operate the three poles of a disconnector through driving shafts and rods (Refer Figure-A) or with one drive per pole. one master and two slave units (Refer Figure- B). PAINTED OPERATING MECHANISM The motor limit switches are also adjustable in the same way. These adjustment possibilities ensure that, in any conditions, the position signalling reflects exactly the position of the main contacts. FIGURE- A FIGURE- B

3 General: Motor: Weight Environmental Operating/storage temperature Operating/storage humidity Ingress protection rating Enclosure material Construction Finish 75kg -50 C to +55 C 0% to 99%RH IP55 (As per IEC 60529) 2.5/3.0mm thick Aluminium sheet 2.5/3.0mm thick Stainless steel sheet 2.5/3.0mm thick Mild steel sheet Riveted/Welded Natural/Painted Motor supply 110Vdc, 220Vdc, 230Vac, 380Vac, 415Vac Supply variation 85% to 110% Current consumption Motor specifications Speed Heating resistor Frame Type DC/50Hz Upto 6A Peak 15A 110Vdc, 220Vdc, 230Vac, 380Vac, 415Vac 900rpm, 1440rpm, 1500rpm Max 375W (0.5H.P) Max 550W (0.75H.P) Max 750W (1.0H.P) 71C/80A Permanent magnet DC motor / Squirrel cage induction motor Mechanical: Connectivity and protection: Performances Nominal output torque Maximum output torque Peak output torque Operating angle Direction of operation Operating time (Open/Close) 1000Nm 1200Nm 6000Nm 90 degree, 108 degree, 120 degree, 185 degree Clockwise or anti clockwise 12s Gear box ratio 50:1 Over travelling limits Gland plate for cable entry Operating rod joint Components used Length of manual operating lever Stopper provided Removable type Through universal U clamp coupling suitable for NB32 or 50 heavy pipe Corrosion free 150/350mm Terminal block Type Wire gauge Wire type Max current Max voltage Breaker Screw/Clip/Stud sq.mm 1.1kV grade multi strand PVC/FRLS/Copper tinned/tri rated 57A 600V Control Double (2A, 3A, 4A, 6A) Motor Auxiliary Double (3A, 4A, 6A, 10A) Triple (3A) Double (2A/16A) Control: Control supply 24Vdc, 48Vdc, 110Vdc, 125Vdc, 220Vdc, 250Vdc, 230Vac Supply variation 85% to 110% DC/50Hz Consumption 12W Auxiliary supply (Light & heating) Heating resistor 230Vac 50Hz Max 100W Auxiliary switch: Rated current Breaking capacity Standard quantity 10A 10A (250Vac) 2A (220Vdc) 6NO+6NC for disconnector 4NO+4NC for earth switch 24NO+24NC maximum

4 Additional features will be provided based on customer request: Auxiliary contact for DC/AC MCB. Additional local/manual/remote contacts for indication. Emergency stop push button. Operational counter. Position indication lamps. Overload relay trip condition. Industrial/Universal socket. Interlocking contactor. AC Supervisory control contactor. Castle lock. Padlock for open/close position. Copper earthing braid for connecting DOP with gearbox. Lockable local/manual/remote selector switch. Single phase preventor. Door switch for lamp. DIMENSIONAL DETAILS

5 TYPICAL ELECTRICAL DIAGRAM: Electrical diagram legends: IC Interlocking contactor. LSO/LSC Limit switch open/limit switch close. MPB/EPB Main push button/earth push button. MBC/EBC - Main bolt coil/earth bolt coil. EMLS Electro mechanical limit switch. OLR Over load relay. LMR Local/Manual/Remote selector switch. CSO/CSC Control switch open/control switch close. CC/OC Closing contactor/opening contactor. M Motor CSL Control switch for lamp. CSH Control switch for heater. TH Thermostat. H Heater. L Lamp.